Scale attachment



(No Model.)

' J. A. WERNER.

SCALE ATTACHMENT.

No. 449,989. PatentfedApr. 7,1891.

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UNITED STATES PATENT OEEICE.

JOHN A. YVERNER, OF CHICAGO, ILLINOIS.

SCALEATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 449,986, dated April 7,1891.

Application filed December 20, 1890. Serial No. 375,331. (No model.)

To @ZZ whom t may concern:

Be it known that I, JOHN A. IVERNER, a citizen of the United States ofAmerica, residing at Chicago, in the county of Oook and State ofIllinois, have invented certain new and useful Improvements in ScaleAttachments, of which the following is a specilication.

My invention relates to scales, and particularly to platformescales, theobject being to provide means operating automatically to compensate forthe weight of the ordinary scoop or receptacle when articles of bulk areto be weighed not requiring the scoop.

The invention consists in the devices and combination of deviceshereinafter speciiied.

In the drawings, Figure l represents the platform of a scale in sectionwith the scoop in place, and Fig. 2 is a view of the platform with aplate in place; but these figures do not show the levers connected tothe scalebeam, these being omitted, as they form no part of theinvention, and hence I deem it unnecessary to illustrate them.

It will be understood that while I have shown the invention applied tothe ordinary form of platform-scale, it may be applied to the scales ofany construction in which a platform is used.

In the iigures, A represents the platform, which is supported in theusual manner by the base I3. In the center of the platform, preferably,but at any convenient position, a hinged section O is provided, fittingan opening in said platform, and this section has a fiange on one edgeextending downwardly, as shown at a.. The normal position of the hingedsection O is as shown in Fig. l, the bottom edge of the flange a beingheld up by a lever h, or it may be held up, if desired, by a spring andnot engage with the lever l) until the weight is applied to the hingedsection. rlhe lever l) is pivoted at Z and has a curved downwardextension c, terminatingin a hook, which passes through the eye of aweight CZ. This weight represents the exact weight of the scoop, and maybe adjusted to conform to the exact weight of dierent scoops, addingshot or like material, the weight being made hollow or with a cavity inits upper face for this purpose. Normally the end c of the levert doesnot come in contact with the eye of the weight, the weight beingsupported upon an arm e, projecting from the base of the scale. In itsnormal position the hinged section is held up, as shown in Fig. l, andthe scoop,which has a supportingiiange 2 projecting below the bottomportion of the scoop, (this being the ordinary constructioln) is placedon the platform so as to be above the hinged section C without coiningin contact therewith. In this position the material may be weighed whichis contained within the scoop without adjustment of the scales orwithout deducting the weight of the scoop, as it will he understood thatthe scales have been previously adjusted to allow for this weight.Suppose, however, that it is now desired to weigh an article which doesnot require the scoop. It is only necessary in this case to place itupon the hinged section, which will thus be depressed, and thisdepression will raise the arm c of the lever, and with it the weight d;and as this Weight equals the weight of the scoop it will be seen thatthe scales will require no adjustinent on account of the scoop havingbeen dispensed with in the weighing of the article. In case continueduse of the scale should be found necessary without the scoop the hingedsection O may be secured in its lowest position by means of a button oor other fasten-' ing means to hold the section down.

I claim as my inventionl. In combination with the platform of a scale, amovable section extending above the level of the platform, a weightnormally supported out of engagement with the section, and connectionsbetween the section and weight, substantially described.

2. In combination with a scale-platform, a movable section kept normallyabove the level of the platform, a pivoted lever extending between thesection and a weight, the end of the said lever being hooked to engagethe weight, a support for the weight whereby it is kept out ofengagement with the lever normally, but is adapted to be lifted when theopposite end of the lever is depressed, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

J. A. IVERNER.

Witnesses:

W. M. DALoLIEsn, ALEX. MCGUNNEGLE.

IOC

